NSImage and NSBitmapImageRep
NSImage and NSBitmapImageRep
- Subject: NSImage and NSBitmapImageRep
- From: Martin Beroiz <email@hidden>
- Date: Wed, 17 Mar 2010 01:39:42 -0500
Hello everybody,
I have a question relating NSImage and NSBitmapImageRep. I have a stream of data that I want to display in a view and it's not in any standard image format. So I created an NSBitmapImageRep, then I filled the bitmapdata with the data and drew it in the view with drawInRect: method of NSBitmapImageRep. All that works perfect.
Now I want to rotate the image 90 degrees before I draw it but without changing the view's coordinate system because i need to draw other things on it. So I thought of making my bitmap rep into an NSImage.
Question is how. I read the docs but they I cannot understand exactly what is the relation between an NSImage and NSBitmapImageRep.
From the docs:
"Image representations are used by an NSImage object to manage image data."
"If you are creating images dynamically, you are responsible for creating the image representation objects you need for your image."
I don't see how you'd "hook" an image with a bitmap rep or vice-versa.
The only relevant method of NSImage I found is drawRepresentation:inRect: but the docs say that I shouldn't call this method directly.
So how would you guys do this?
Thanks
Martin.
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